Sap-pail cover.



Patented Sept. i8, |900.

A. A. LOW.

SAP PAH; COVER.

(Applicatioxg filed. Nov. 7, 1899.)

(No Model.)

WWK-maan z @We THE N'onms versus :nl Pnoaumo., wAsHINaroN. 0.1:.

UNITED STATES PATENT OFFICE. l

ABBOT AUGUSTUS LOW, OF NEW YORK, N. Y.

`'sAPilSAlL COVER.

SPECIFICATION formiag parte of Letters Patent No. 65,o39, datedseptember 1s, 19de.

Application filed Novibi 7, 1899. Serial No. 736,087. (No model.)

.'l'o all whom) t may concern:

Be it known that I, ABBOT AUGUSTUS LOW, a citizen of the United States,residing in the cityof NewYork, borough of Brooklyn, in the county ofKings and State of New York, have invented certain new and usefulImprovements in SapPail Covers, of which the following is aspecification suficientto enable others skilled in the art to which theinvention ap-` pertains to make and use-the same.

My invention relates to pails used in the collection of sap from trees;and it consists in the special construction and arrangement of partshereinafter described and claimed.

In the accompanying drawings, Figure 1 is a Vertical central section ofthe pail with the cover applied thereto; Fig. 2, a similarview taken ona plane at right angles to Fig. l; Fig. 3, aview of the under side ofthe cover; Fig. 4, a view similar to Figs. 1 and 2 without the cover.

The pail p is preferably, though not necessarily, made of sheetmetal,with the internal annular groove g near its rim or edge spun orotherwise formed to afford a recess or depression at all points of thecircumference for engagement with the bearings b b of the spring-bolts Bupon the under side of the cover C, which latter is substantially thesame in construction and operation as that shown and described in mysaid concurrent application for patent. Thus each springbolt B rests inguides G G and is provided with a shoulder b', between which and one ofthe guides G is interposeda spring S, which tends constantly to throwthe bearing b into engagement with the groove g and maintain it thereinwhen the cover is forced down upon the edges of the pail. The shank b2of eachbolt B is prevented from turning upon its longitudinal aXisbymaking said shank square in cross-section and by' making the engagingholes in the guides G to correspond, orV the same result may be attainedby any other Well-known mechanical expedient.

Y In applying the cover O one of the bear ings b is brought intoengagement with any portion of the annular groove g, the spring allowingthe bolt to be forced back sufficiently to admit of the depression ofthe cover until the other bearing b is likewise brought into engagementwith the internal groove g, when the cover is practically locked rigidlyin position, but not sufficiently so to prevent its intentionaldisplacement by pressure applied to raise the lid on one side, andthereby free the bearings b b from the groove g. The sides of the grooveg and the bearings b b are sufficiently inclinedy to act as wedge or camsurfaces, which while they insure frictional contact do not positivelylock the parts nor prevent the bearings from sliding out of the groove gwhen sufcient pressure is applied to the cover externally.

What I claim as my invention, and desire to secure by Letters Patent,is-

The combination of the pail 1o, formed with the annular groove g, havinginclined sides, the cover C formed with the guides G, G, the bolts B, B,having the cam-shaped bearings b, b, square Shanks b2, b2, and shouldersb', b', and the springs S, the whole arranged and operatingsubstantially as herein shown and described. Y t y ABBOT AUGUSTUS .LOW.Witnesses:

DMW. GARDNER, GEO. WM. MIATT.

